Crown-setter



S. R. LEWIS.

CROWN SETTER.

APPLICATION FILED MAY 5. 1920.

Patented July fi, 192%.

wi/cmwo i NITED STAT orrice,

samurai. nrrnv Lewis, on an ras rnnas.

onown-sn'r'rnn.

Application filed. May 5, 1920. Serial No. 379,078.

To all whom it may concern:

Be it known that I, SAMUEL R. Lewis, a citizen of the United States, residin at El Paso, in the county of El Paso and iotate of Texas, have invented anew and useful Crown-Setter, of which the following is a specification.

By way of explanation, it may be stated that, in order that a crown may fit properly on a tooth, it is necessary that the crown have impressions corresponding with the irregularities of the tooth, to the end that p the teeth on the upperj aw andon the man- I is Y to

dible may articulate properly, after the crown has been placed on the tooth.

It is the object of this invention to provide novel but simple means whereby the indentations of impressions may bemade in the crown, the device being so constructed thati which will appear as the description pro-v ceeds, the invention resides in the combination and arrangement of parts and 1n the details of construction hereinaiter descrlbed and claimed, it being understood that, within the scope of what isclaimed, changes in the precise embodiment of the invention shown p can be made without departing from the spirit of the invention. In the accompanying drawlngsgt Figure 1 discloses, in side elevation, at

tool constructed in accordance with the invention; Fig. 2 is a planof the tool; Fig. 3

is an end elevation of the tool.

ter of this application is of the pliers type and comprises crossed handles 1 provided with transverse jaws 2 which are bifurcated. as shown at 3 to form inwardly curved fingers 4, spaced widely apart and preferably of circular cross section. The fingers of one jaw are supplied with concaved terminal Specification'of Letters Patent.

Patented J my 6, 1920.,

recesses 5, the fingers of the other jaw havlng' convexed tips 6 cooperating with the re cesses 5, The recesses 5 are of different diameters, and the tips 6 are spaced accordingly. I The handles 1 are connected at their point of crossing by a pivot element 7, A

spring strip 8 is secured at one end, as indicated at 9,;to one of the handles 1, near to the extrem ty thereof, the spring having a curved end 10 bearing slidably upon the other handle, adjacent to the pivot element 7.

The spring 8, obviously constitutes a means for separating the working ends of the tool.

The: crown may be placed on either of the fingers which have the recesses 5, and when the handles 1 are pressed together, the corresponding tip 6 will effect the necessary indentation of the crown. Since there are two recesses 5, of different diameters, and

since the tips 6 are of different diameters,

impressions of different shapes may be made, thereby widening the field of use of the instrument, Although the tool may be employed for making impressions of different diameters, the fingers 4: are separated far enough, transversely, so that when one set of the elements 6-5 is in use, the other set offingers 4 will not interfere with the operation of the tool.

Having thus described the invention, what is clail'ned is V ,A tool of the class described comprising crossed handles provided with jaws which are bifurcated to form inwardly extended fingers, the fingers of one ]LW having concaved terminal recesses of different sizes and the fingers of the other jaw having conveXed tips of different sizes corresponding to the recesses and cooperating therewith; and

t means for pivotally connecting the handles The instrument forming the sub ect matat their point of crossing.

In testimony that I claim the foregoing as myown, I have hereto affixed my signature in the presence of two witnesses.

SAMUEL RILEY LEWIS.

Witnesses:

'GLEN LEWIS,

H. N. her. 

